JP2712151B2 - Vehicle suspension - Google Patents
Vehicle suspensionInfo
- Publication number
- JP2712151B2 JP2712151B2 JP61133949A JP13394986A JP2712151B2 JP 2712151 B2 JP2712151 B2 JP 2712151B2 JP 61133949 A JP61133949 A JP 61133949A JP 13394986 A JP13394986 A JP 13394986A JP 2712151 B2 JP2712151 B2 JP 2712151B2
- Authority
- JP
- Japan
- Prior art keywords
- wheel support
- vehicle body
- support member
- vehicle
- link
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、車両用懸架装置に関するものである。
（従来の技術）
従来の車両用懸架装置としては、例えば第５図に示す
ようなものがある（特開昭58−209606号）。これはスト
ラツト式懸架装置を示すもので、車輪53を回転自在に支
持する車輪支持部材54と、車幅方向に延在し、外端部が
該車輪支持部材54に揺動自在に結合され、内端部が車体
51に揺動自在に結合された２本の揺動リンク55と、車体
前後方向に延在し、一端部が車体51に揺動自在に結合さ
れ、他端部が車輪支持部材54に揺動自在に結合されたラ
ジアスロツド56と、車輪支持部材54に立設したシヨツク
アブソーバ52内蔵のストラツトとを有し、シヨツクアブ
ソーバ52のピストンロツド52aは、ストラツトアツパマ
ウント50を介して車体51に結合されている。57はコイル
スプリングである。
（発明が解決しようとする問題点）
しかしながら、このような従来の車両用懸架装置にあ
つては、シヨツクアブソーバ52と車体51との間の瞬間中
心をＯとして、揺動リンク55の揺動中心線Ｘとこの瞬間
中心Ｏとの間に大きな位置ずれを生じていたため、シヨ
ツクアブソーバ52の瞬間中心Ｏを中心とする回転運動方
向と揺動リンク55の揺動中心線Ｘを中心とする揺動運動
方向（矢印Ｙにて示す）とが大きく相違する。従つて車
輪53のバウンド・リバウンドに際し、揺動リンク55の端
部のブツシユにこじりを生じ、その結果、懸架装置の摺
動摩擦抵抗が増大して乗心地が悪化すると共に、ブツシ
ユの耐久性が低下する。
（問題点を解決するための手段及び作用）
この発明は、このような従来の問題点に鑑みてなされ
たもので、その構成は、車輪を回転自在に支持する車輪
支持部材と、車幅方向に延在し、外端部が該車輪支持部
材に揺動自在に結合され、内端部が車体に揺動自在に結
合された揺動リンクと、車体前後方向に延在し、一端部
が車体に揺動自在に結合され、他端部が車輪支持部材側
に揺動自在に結合されると共に、車体への結合部が車輪
支持部材側への結合部よりも上方に位置しているラジア
スロツドと、該車輪支持部材又は該揺動リンクに立設し
たシヨツクアブソーバとを有する車両用懸架装置におい
て、車体側面視で、前記揺動リンクの車輪支持部材側の
揺動中心線が、該ラジアスロツドの軸線の延長線上に位
置する前記シヨツクアブソーバと車体との間の瞬間中心
を実質的に指向する車両用懸架装置である。
しかして、車両のバウンド・リバウンドに際し、車輪
支持部材はシヨツクアブソーバと共にシヨツクアブソー
バと車体との間の瞬間中心をほぼ中心とする回転運動を
行なう。その際、揺動リンクの車輪支持部材側の端部
は、車輪支持部材と共に上記瞬間中心を中心として回転
運動しつつ該瞬間中心を指向する揺動中心線を中心とし
て揺動する。かくして、揺動リンクの揺動運動は、こじ
れが最小のものとなる。また、ラジアスロツドは、車体
への結合部が車輪支持部材側への結合部よりも上方に位
置しているため、車両のスクワツトが防止されて、乗員
に不快感を与えることがない。
（実施例）
以下、この発明の１実施例について図面を参照して説
明する。
第１〜４図はこの発明をストラツト式懸架装置に適用
した１実施例を示す。ストラツク式懸架装置は、車輪１
を回転自在に支持する車輪支持部材２と、車幅方向に延
在し、外端部がブツシユ3a,3bを介して車輪支持部材２
に揺動自在に結合され、内端部がブツシユ4a,4bを介し
て車体５に揺動自在に結合された２本の揺動リンク６
と、車体前後方向に延在し、一端部がブツシユ７を介し
て車体５に揺動自在に結合され、他端部がブツシユ８を
介して車輪支持部材２に揺動自在に結合されたラジアス
ロツド９と、車輪支持部材２に立設され、上端部がスト
ラツトアツパマウント10を介して車体５に取付けられた
ストラツト11とを有する。なお、ラジアスロツド９は、
第１図，第２図から分かるように、その車体５への結合
部であるブツシユ７が、車輪支持部材２への結合部であ
るブツシユ８よりも上方に位置することにより、アンチ
スクワツト型を構成している。
揺動リンク６は、フロントリンク6aとリヤリンク6bと
で構成されるパラレルリンク式となつており、車輪支持
部材２側のブツシユ3a,3bは、第３図に示すように外筒3
cと内筒3dとの間に弾性体3eを加硫接着して形成され、
内筒3dがボルト・ナツト12にて車輪支持部材２に固定さ
れ、外筒3cがフロントリンク6a又はリヤリンク6bに溶接
固着されている。他のブツシユ4a,4b,7,8も実質的に同
様の構造となつている。
ストラツトアツパマウント10は、内筒10a、外筒10b及
び内、外筒10a,10bを連結する弾性体10cとを有し、内筒
10aが後記するピストンロツド14aに取付けられ、外筒10
bが車体５に取付けられている。
ストラツト11は、下端部を車輪支持部材２に固定した
ストラツト本体13と、ストラツト本体13に内蔵されたシ
ヨツクアブソーバ14とよりなり、ピストンロツド14aに
固定したアツパシート15とストラツト本体13に固定した
ロアシート16との間にコイルスプリング17が圧縮状態で
介装されている。18はバンパラバーである。
このようなストラツト式懸架装置は、車体側面視にお
いて、第４図に示すリンク機構と見なすことができ、６
個の瞬間中心O1〜O6を有する。
このうち、シヨツクアブソーバ14と車体５との間の瞬
間中心O6は、車体５上を直線運動するストラツトアツパ
マウント10の運動方向と垂直な線分とラジアスロツド９
の軸線の延長線との交点として得られ、車輪１のバウン
ド・リバウンドに際し、シヨツクアブソーバ14の回転中
心となる。
そして、揺動リンク６は、車輪支持部材２側の揺動中
心線Ｘがシヨツクアブソーバ14と車体５との間の瞬間中
心O6を実質的に指向するように配置する。具体的に言え
ば、揺動リンク６の各端部にあるブツシユ3a,3bの中心
軸線が瞬間中心O6を通過するように配置する。
ストラツト式懸架装置において、構成要素の配置に上
記関係を与えれば、車両のバウンド・リバウンドに際
し、車輪支持部材２は、瞬間中心O6を中心として回転移
動し、その際揺動リンク６の車輪支持部材２側の端部
は、車輪支持部材２と共に瞬間中心O6を中心として回転
移動しつつ同じ瞬間中心O6を指向する揺動中心線Ｘを中
心としてブツシユ3a,3bの周りに揺動する。従つて、揺
動リンク６は、こじれが最小の揺動運動を行なう。
なお、ラジアスロツド９は、車体５への結合部である
ブツシユ７が、車輪支持部材２への結合部であるブツシ
ユ８よりも上方に位置しているため、車両のスクワツト
が防止されて、乗員に不快感を与えることがない。
ところで、この発明は、揺動リンクとしてロアリンク
とアツパリンクとを備え、この両リンク間又はアツパリ
ンク上にシヨツクアブソーバを備えるダブルウイツシユ
ボーン型の懸架装置にも適用可能である。この場合であ
つても、揺動リンクのナツクル（車輪支持部材）側の揺
動中心線をシヨツクアブソーバと車体との間の瞬間中心
に実質的に向けることにより、揺動リンクのこじりが最
小限度に抑えられる。
（発明の効果）
以上の説明によつて理解されるように、この発明によ
れば、車両用懸架装置において、揺動リンクの車輪支持
部材側のこじり作用が著しく抑制されるため、車両用懸
架装置の各所の摺動摩擦を軽減させることができ、揺動
リンクに備えられるブツシユの耐久性を向上できると共
に、車両のスクワツトが防止されて乗心地を改善するこ
とができる。Description: TECHNICAL FIELD The present invention relates to a vehicle suspension system. (Prior Art) As a conventional suspension apparatus for a vehicle, for example, there is one as shown in FIG. 5 (JP-A-58-209606). This shows a strut-type suspension device, in which a wheel support member 54 for rotatably supporting a wheel 53 and a vehicle width direction are extended, and an outer end portion is swingably connected to the wheel support member 54, The inner end is the body
Two swing links 55 swingably coupled to the vehicle body 51, and extend in the vehicle front-rear direction. One end is swingably coupled to the vehicle body 51, and the other end swings to the wheel support member 54. It has a radius rod 56 freely connected and a strut built into a shock absorber 52 erected on a wheel support member 54, and a piston rod 52a of the shock absorber 52 is connected to a vehicle body 51 via a strut mount 50. ing. 57 is a coil spring. (Problems to be Solved by the Invention) However, in such a conventional vehicle suspension device, the instantaneous center between the shock absorber 52 and the vehicle body 51 is set to O, and the swing center of the swing link 55 is Since a large displacement has occurred between the line X and the instantaneous center O, the rotational movement direction of the shock absorber 52 around the instantaneous center O and the swing of the swing link 55 around the swing center line X The direction of movement (indicated by arrow Y) is significantly different. Therefore, when the wheel 53 bounces and rebounds, the bushing at the end of the swing link 55 is twisted. As a result, the sliding frictional resistance of the suspension device increases, the ride comfort deteriorates, and the durability of the bushing decreases. I do. (Means and Actions for Solving the Problems) The present invention has been made in view of such a conventional problem, and has a wheel supporting member rotatably supporting a wheel, and a vehicle width direction. A swing link whose outer end is swingably coupled to the wheel support member, and whose inner end is swingably coupled to the vehicle body, and which extends in the vehicle longitudinal direction, and has one end. A radius slot that is swingably connected to the vehicle body, the other end is swingably connected to the wheel support member side, and the connection part to the vehicle body is located above the connection part to the wheel support member side. And a shock absorber erected on the wheel support member or the swing link, the swing center line of the swing link on the wheel support member side of the radius slot when viewed from the side of the vehicle body. The shock absorber located on an extension of the axis; This is a suspension system for a vehicle that substantially directs the instantaneous center between the vehicle body and the vehicle body. Thus, when the vehicle bounces and rebounds, the wheel support member performs a rotational movement about the instantaneous center between the shock absorber and the vehicle body together with the shock absorber. At this time, the end of the swing link on the side of the wheel support member rotates with the wheel support member around the instantaneous center and swings around the swing center line pointing toward the instantaneous center. Thus, the oscillating movement of the oscillating link has minimal torsion. Further, since the radius slot has a connection portion to the vehicle body located higher than a connection portion to the wheel support member side, squatting of the vehicle is prevented and the occupant does not feel uncomfortable. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 show an embodiment in which the present invention is applied to a strut type suspension device. The suspension system is a wheel
And a wheel support member 2 rotatably supporting the wheel support member 2 and extending in the vehicle width direction and having an outer end portion through bushes 3a and 3b.
And two swing links 6 whose inner ends are swingably connected to the vehicle body 5 via bushes 4a and 4b.
And a radial slot extending in the front-rear direction of the vehicle body, one end of which is swingably connected to the vehicle body 5 via the bush 7 and the other end of which is swingably connected to the wheel support member 2 via the bush 8. 9 and a strut 11 erected on the wheel support member 2 and having an upper end attached to the vehicle body 5 via a strut upper mount 10. The radius slot 9 is
As can be seen from FIGS. 1 and 2, the bush 7 which is a connecting portion to the vehicle body 5 is located higher than the bush 8 which is a connecting portion to the wheel supporting member 2, so that the anti-squat type is provided. Is composed. The swing link 6 is of a parallel link type comprising a front link 6a and a rear link 6b. The bushes 3a, 3b on the wheel support member 2 side are connected to the outer cylinder 3 as shown in FIG.
An elastic body 3e is formed by vulcanization bonding between c and the inner cylinder 3d,
The inner cylinder 3d is fixed to the wheel support member 2 with bolts and nuts 12, and the outer cylinder 3c is fixedly welded to the front link 6a or the rear link 6b. The other bushes 4a, 4b, 7, 8 have substantially the same structure. The strut upper mount 10 has an inner cylinder 10a, an outer cylinder 10b, and an elastic body 10c connecting the inner and outer cylinders 10a and 10b.
10a is attached to the piston rod 14a described later,
b is attached to the vehicle body 5. The strut 11 includes a strut body 13 having a lower end fixed to the wheel support member 2 and a shock absorber 14 built in the strut body 13, and an upper sheet 15 fixed to a piston rod 14a and a lower seat 16 fixed to the strut body 13. Between them, a coil spring 17 is interposed in a compressed state. 18 is a bumper bar. Such a strut type suspension can be regarded as a link mechanism shown in FIG.
Have instantaneous centers O 1 to O 6 . Among them, the instantaneous center O 6 between the shock absorber 14 and the vehicle body 5 is a line segment perpendicular to the direction of movement of the strut mount 10 that moves linearly on the vehicle body 5 and the radius slot 9.
And the center of rotation of the shock absorber 14 when the wheel 1 bounces and rebounds. The swing link 6 is arranged such that the swing center line X on the wheel support member 2 side is substantially directed to the instantaneous center O 6 between the shock absorber 14 and the vehicle body 5. Specifically, bush 3a, 3b central axis in each end of the pivoting link 6 is arranged to pass through the center O 6 moment. In the case of the strut type suspension, if the above-mentioned relationship is given to the arrangement of the components, the wheel support member 2 rotates around the instantaneous center O 6 when the vehicle bounces and rebounds. The end on the member 2 side rotates about the instantaneous center O 6 with the wheel support member 2 and swings around the bushes 3a and 3b around a swing center line X pointing toward the same instantaneous center O 6. . Therefore, the oscillating link 6 performs an oscillating motion with minimum twisting. In addition, since the radius slot 9 has the bush 7 which is a connecting portion to the vehicle body 5 located above the bush 8 which is a connecting portion to the wheel supporting member 2, the squat of the vehicle is prevented, and the occupant is prevented from occupant. No discomfort. By the way, the present invention is also applicable to a double whip bone-type suspension device that includes a lower link and an upper link as swinging links, and that includes a shock absorber between these links or on the upper link. Even in this case, the swing center line of the swing link on the knuckle (wheel support member) side is substantially directed to the instantaneous center between the shock absorber and the vehicle body, so that the twist of the swing link is minimized. Can be suppressed. (Effects of the Invention) As can be understood from the above description, according to the present invention, in the vehicle suspension device, the twisting action of the swing link on the wheel supporting member side is significantly suppressed. Sliding friction at various points of the device can be reduced, the durability of the bush provided on the swing link can be improved, and squatting of the vehicle can be prevented, so that riding comfort can be improved.
【図面の簡単な説明】
第１図はこの発明の１実施例を一部断面にて示す側面
図、第２図は同じく平面図、第３図は揺動リンクのブツ
シユを示す断面図、第４図は作用説明図、第５図は従来
構造を示す側面図である。
1:車輪、2:車輪支持部材、3a,3b:ブツシユ、5:車体、6:
揺動リンク、6a:フロントリンク、6b:リヤリンク、9:ラ
ジアスロツド、10:ストラツトアツパマウント、14:シヨ
ツクアブソーバBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing one embodiment of the present invention in partial cross section, FIG. 2 is a plan view of the same, FIG. 3 is a cross sectional view showing a bush of an oscillating link, FIG. 4 is an explanatory view of the operation, and FIG. 5 is a side view showing a conventional structure. 1: wheels, 2: wheel support members, 3a, 3b: bush, 5: body, 6:
Swing link, 6a: front link, 6b: rear link, 9: radius slot, 10: strut mount, 14: shock absorber
Claims (1)
向に延在し、外端部が該車輪支持部材に揺動自在に結合
され、内端部が車体に揺動自在に結合された揺動リンク
と、車体前後方向に延在し、一端部が車体に揺動自在に
結合され、他端部が車輪支持部材側に揺動自在に結合さ
れると共に、車体への結合部が車輪支持部材側への結合
部よりも上方に位置しているラジアスロツドと、該車輪
支持部材又は該揺動リンクに立設したシヨツクアブソー
バとを有する車両用懸架装置において、車体側面視で、
前記揺動リンクの車輪支持部材側の揺動中心線が、該ラ
ジアスロツドの軸線の延長線上に位置する前記シヨツク
アブソーバと車体との間の瞬間中心を実質的に指向する
ことを特徴とする車両用懸架装置。(57) [Claims] A wheel support member rotatably supporting a wheel, a swinging member extending in a vehicle width direction, an outer end portion swingably coupled to the wheel support member, and an inner end portion swingably coupled to the vehicle body. A dynamic link, extending in the front-rear direction of the vehicle body, one end of which is swingably connected to the vehicle body, the other end of which is swingably connected to the wheel support member side, and the connection part to the vehicle body is a wheel support. In a vehicle suspension device having a radius slot located above a coupling portion to a member side and a shock absorber erected on the wheel support member or the swing link, in a vehicle body side view,
The swing center line of the swing link on the wheel support member side is substantially directed to the instantaneous center between the shock absorber located on an extension of the axis of the radius slot and the vehicle body. Suspension device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133949A JP2712151B2 (en) | 1986-06-11 | 1986-06-11 | Vehicle suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133949A JP2712151B2 (en) | 1986-06-11 | 1986-06-11 | Vehicle suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62292511A JPS62292511A (en) | 1987-12-19 |
| JP2712151B2 true JP2712151B2 (en) | 1998-02-10 |
Family
ID=15116835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61133949A Expired - Lifetime JP2712151B2 (en) | 1986-06-11 | 1986-06-11 | Vehicle suspension |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2712151B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6121802A (en) * | 1984-07-10 | 1986-01-30 | Nissan Motor Co Ltd | Suspension of vehicle |
-
1986
- 1986-06-11 JP JP61133949A patent/JP2712151B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62292511A (en) | 1987-12-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |